Funnel



March 13, 1928. 1,662,147

. N. FARDEN FUNNEL Original Filed Feb. 26. 1926 Patented Mar. 13, 1928.

NELS FARDEN, OF BATTLE LAKE, MINNESOTA.

FUNNEL.

Application filed February 26, 1926, Serial No. 90,788. Renewed August1, 1927.

It is well known that when a liquid is poured through a tunnel or whenit is allowed to run out of a large vessel through a relatively smallopening, a whirling motion is always set up and may be carried to suchan extent that a hole will be formed through the body of the liquidwhich escapes in the form of an annular layer adjacent the wall of theexit opening. It is obvious that this causes the liquid to flow throughthe tunnel or from the vessel much more slowly than it would if theentire exit opening were constantly filled with liquid.

An object of my invention is to provide a simple funnel which may bereadily stamped from sheet metal and which will prevent the abovedescribed whirling action of the liquid passing therethrough and therebygreatly reduce the amount of time necessary for the passage of a givenamount of liquid.

Other objects of the invention will be apparent from the followingdetailed description and set -forth in the appended claim.

In the drawings:

Figure 1 is a side View, one half of the tunnel being shown in elevationand the other half in longitudinal section.

Figure 2 is a top plan view. 1

The tunnel comprises the ordinary frustoconical body 1 which usuallyterminates in a relatively short and much smaller generally cylindricalextension 2. The upper edge of the body member 1 is or may be formedwith a rolled or beaded edge 3. A second smaller and shorterfrustoconical member 4 is provided with an annular flat rim or margin 5at its larger end, which rests at its outer periphery upon the edge 3 ofthe body member 1, and is suitably fastened thereto. This small portion4 is pro vided with a plurality of longitudinally extending portions 6caused by slitting the metal and pressing out the portion at one side ofthe slit to form the flanges 6 and corresponding openings 7.

A generally cylindrical member 8 is fas tened at its lower end to thebead 3 and edge of the rim 5 and has at its top an annular rim 9projecting inwardly a short distance from the edge of the member 8 andsloping slightly toward the center. At the junction of the members 8 and9, there may be provided a rolled edge 10. The various members arevpreferably soldered together, although other means of fastening may beemployed. The tunnel may be provided with the usual ring 11 for liftingor hanging the same.

WVhen a liquid is poured into the funnel, a portion of the same will runthrough the opening 7 into contact with the wall 1, whil another partwill be discharged from the lower end of the portion a into the extremelower portion of the body 1 and the spout 2. Any whirling tendency whichmay he set up by the flow of liquid to the inner funnel 4i willbecounteracted by the flanges 7 which prevent such tendency from producingthe usual whirlpool eliect in the funnel. The liquidwvhich passesthrough the opening 7 and comes in contact with the wall of the mainfunnel, is prevented from setting up any such whirling action because ofthe relatively short distance through which it travelsv in contact withsaid wall and because fresh amounts of liquid are constantly pouringthrough said opening 7 and thus breaking up any tendency to whirl whichmight otherwise arise in the liquid in con b tact with the main portion1.

The rim 5 in connection with the rim 9 forms what might be termed anannular chamber at the top of the funnel which will hold excess liquidif it is poured in too rapidly and the flange 9 will also preventtendency to splashing and overflow. It is sloped inwardly slightly inorder that any liquid falling thereon will run normally into the funnel.l I

It will be seen that the invention provides a simple device, practicallyall parts of which may be stamped of sheet metaland produced at a lowcost. It is also apparent that liquid will pass through said funnel muchmore rapidly and evenly than in the ordinary funnel, thus saving a largeamount of time, where it is found necessary to use a funnel frequently.It is obvious that the precise form and proportions may be varied aswell as minor details Without in any way departing from the spirit ofthe invention,

with the said body and having a fiat rim at its top, said second portionprovided with a plurality of passages therethrough each having at onemargin an inwardly extending flange.

In testimony whereof, I have hereunto subscribed my'name.

NELS FARDEN.

